code: def is_valid(self) -> bool:
      return self._trace_state.is_valid()
  
imports: from __future__ import annotations
  import dataclasses
  import hashlib
  import typing
  import jax
  import numpy
  from flax.experimental.nnx.nnx import errors, filterlib, tracers
label_desc: Use image node_id 11 for calling the Rngs obj's underlying member method code with example usage: obj.is_valid() and returns: self